Correct option is A
The correct answer is: (a) Principle 6
Detailed Explanation
Principle 6 of the landmark 1972 Stockholm Declaration on the Human Environment incorporates the Assimilative Capacity Principle, stating:
"The discharge of toxic substances or of other substances and the release of heat, in such quantities or concentrations as to exceed the capacity of the environment to render them harmless, must be halted in order to ensure that serious or irreversible damage is not inflicted upon ecosystems."